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| 1 // Copyright 2012 the V8 project authors. All rights reserved.7 | 1 // Copyright 2012 the V8 project authors. All rights reserved.7 |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 2317 } | 2317 } |
| 2318 } else if (left->IsConstantOperand()) { | 2318 } else if (left->IsConstantOperand()) { |
| 2319 int32_t value = ToInteger32(LConstantOperand::cast(left)); | 2319 int32_t value = ToInteger32(LConstantOperand::cast(left)); |
| 2320 if (instr->hydrogen_value()->representation().IsSmi()) { | 2320 if (instr->hydrogen_value()->representation().IsSmi()) { |
| 2321 cmp_left = ToRegister(right); | 2321 cmp_left = ToRegister(right); |
| 2322 cmp_right = Operand(Smi::FromInt(value)); | 2322 cmp_right = Operand(Smi::FromInt(value)); |
| 2323 } else { | 2323 } else { |
| 2324 cmp_left = ToRegister(right); | 2324 cmp_left = ToRegister(right); |
| 2325 cmp_right = Operand(value); | 2325 cmp_right = Operand(value); |
| 2326 } | 2326 } |
| 2327 // We transposed the operands. Reverse the condition. | 2327 // We commuted the operands, so commute the condition. |
| 2328 cond = ReverseCondition(cond); | 2328 cond = CommuteCondition(cond); |
| 2329 } else { | 2329 } else { |
| 2330 cmp_left = ToRegister(left); | 2330 cmp_left = ToRegister(left); |
| 2331 cmp_right = Operand(ToRegister(right)); | 2331 cmp_right = Operand(ToRegister(right)); |
| 2332 } | 2332 } |
| 2333 | 2333 |
| 2334 EmitBranch(instr, cond, cmp_left, cmp_right); | 2334 EmitBranch(instr, cond, cmp_left, cmp_right); |
| 2335 } | 2335 } |
| 2336 } | 2336 } |
| 2337 } | 2337 } |
| 2338 | 2338 |
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| 4135 } | 4135 } |
| 4136 | 4136 |
| 4137 | 4137 |
| 4138 void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { | 4138 void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
| 4139 Condition cc = instr->hydrogen()->allow_equality() ? hi : hs; | 4139 Condition cc = instr->hydrogen()->allow_equality() ? hi : hs; |
| 4140 Operand operand(0); | 4140 Operand operand(0); |
| 4141 Register reg; | 4141 Register reg; |
| 4142 if (instr->index()->IsConstantOperand()) { | 4142 if (instr->index()->IsConstantOperand()) { |
| 4143 operand = ToOperand(instr->index()); | 4143 operand = ToOperand(instr->index()); |
| 4144 reg = ToRegister(instr->length()); | 4144 reg = ToRegister(instr->length()); |
| 4145 cc = ReverseCondition(cc); | 4145 cc = CommuteCondition(cc); |
| 4146 } else { | 4146 } else { |
| 4147 reg = ToRegister(instr->index()); | 4147 reg = ToRegister(instr->index()); |
| 4148 operand = ToOperand(instr->length()); | 4148 operand = ToOperand(instr->length()); |
| 4149 } | 4149 } |
| 4150 if (FLAG_debug_code && instr->hydrogen()->skip_check()) { | 4150 if (FLAG_debug_code && instr->hydrogen()->skip_check()) { |
| 4151 Label done; | 4151 Label done; |
| 4152 __ Branch(&done, NegateCondition(cc), reg, operand); | 4152 __ Branch(&done, NegateCondition(cc), reg, operand); |
| 4153 __ stop("eliminated bounds check failed"); | 4153 __ stop("eliminated bounds check failed"); |
| 4154 __ bind(&done); | 4154 __ bind(&done); |
| 4155 } else { | 4155 } else { |
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| 5870 __ lw(result, FieldMemOperand(scratch, | 5870 __ lw(result, FieldMemOperand(scratch, |
| 5871 FixedArray::kHeaderSize - kPointerSize)); | 5871 FixedArray::kHeaderSize - kPointerSize)); |
| 5872 __ bind(deferred->exit()); | 5872 __ bind(deferred->exit()); |
| 5873 __ bind(&done); | 5873 __ bind(&done); |
| 5874 } | 5874 } |
| 5875 | 5875 |
| 5876 | 5876 |
| 5877 #undef __ | 5877 #undef __ |
| 5878 | 5878 |
| 5879 } } // namespace v8::internal | 5879 } } // namespace v8::internal |
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